I googled a side by side comparison and they suggested Shipt over the competition. I have used other services before and ended up trying Shipt for the first time and I there really isn't much comparison at all. Shipt uses a membership only, month to month or yearly. I chose M2M, other places charge by transaction, tho some do offer yearly memberships. Shipt kept in contact with me the entire time, sent a receipt, email and text making sure I was satisfied and gave me details on what wasn't available. Other services have not given me receipts or follow ups, many missing items and hardly any communication.